To Pin or to Pocket Mirror? That Is the Question

One of my favorite things to do is make cross stitch initials (monograms). Once the stitching is done I press it into either a pocket mirror or a pinback button that can be worn. I mainly do these for gifts but I have sold a few. I want to do one for a very special lady that has been a huge inspiration to me on so many levels. The problem? I don't know if I should do a pin or a mirror for her, and I don't really want to ask because I want it to be a surprise. What to do, what to do?

This is a sample of the cross stitch initials.

with the pinback

with the mirror back...

So, should I just ask the recipient which one they'd prefer?